Your steps 5, 6 should be just navigating to localhost:8080/jbpm-console. I'd recommend using localhost rather than 127.0.0.1 because a number of default settings (which all you can change if needed) are set to use localhost rather than a specific IP.

Step 3 is confusing: Designer is integrated with guvnor, so you would use the Designer inside guvnor by creating/editing BPMN2 processes there.